diff

Short definition from Wiktionary

Noun

1. 1
   Clipping of difference
2. 2
   Clipping of differential
3. 3
   Used to trash-talk an opposing team at the end of a game by pointing out a skill difference between some role and the same role on the other team.
4. 4
   Any program which compares two files or sets of files and outputs a description of the differences between them.
5. 5
   The output of a diff program, a diff file.
6. 6
   Abbreviation of differential: the differential gear in an automobile.
7. 7
   Abbreviation of differential: differential of types of white blood cell in a complete blood count.
8. 8
   A difficult route.
9. 9
   Clipping of difficulty.

Verb

1. 1
   To run a diff program on (files or items) so as to produce a description of the differences between them, as for a patch file.
2. 2
   To compare two files or other objects, manually or otherwise.
3. 3
   To win a fight against another, with a defined level of difficulty. Usually used when power scaling fictional characters.

Adjective

1. 1
   Abbreviation of different.

Proper noun

1. 1
   A program, historically part of the Unix operating system, which compares two files or sets of files and outputs a description of the differences between them.